Handling and feeding of pulverized coal



Nov. 10 1925. 1 1, 6 51 A. V. ADAMSON HANDLING Al FEEDING OF PULVERIZED COAL Filed Nair. 19, 1924 ATTORNEY? Patented Non. it, 1%25.

isrrso s'rarss P sh 'li l l ii mm-m ARTHUR V. ADAMSON, OF HEM'ESTEAIP, NEW YORK, ASSIGNER-T J Cfili'flil'flllilllftlhl El i- GIIQEERING CORPORATIGN, A CORIPORA'IIQN 013 wil iil'fll Aiiplicaflon filed November 19, 192%., Serial lie. 75 3,7131.

To aZZ whom it may cmwcm:

Be it known that I, ARTHUR V. AoAMsoN, a citizen of the United States, residing at Hempstead, in the county oft Nassau and 5 State of New York, have invented certain new and useful Improvements in the Handling and Feeding of Pulverized Goal, of which the following is a specification.

This invention relates to systems for the handling of pulverized fuel and is especially useful in connection with such systems as are associated with a furnace or combustion chamber for the burning of such fuels l clore specifically the invention is useful 35 in systems having a closed circulation of carrying air.

One of the primary objects of my inventionis to overcome diliiculties arising from condensate which, in the absence of pro 29 vision to the contrary, such as I propose, sometimes causes clogging and other diiiicui'ties. How the foregoing, together with such other objects as may hereinafter appear, or

25 are ncident to my invention, are obtained is illustrated in the accompanying drawings wherein 2 Fig. 1 is a side eievation of a system in connection with which my invention is usefnl, such figure showing one arrangement of my improvement;

And Fig, 9 is a fragmentary view showanother form of my invention and one is particularly adapted to systems ociated direc y with a furnace .ied with pulverized coal.

now to l'iig. 1, reference charenotes the combustion chamber in ch the fuel is to be burned, such fuel being prepared by the mill ll supplied from 1 suitable source with. crushed coal. From the mill, the pulverized cool is led by the pipe to the cyclone scnarator 8 Where the coal is separated from the air, the air being returned to the mill by Way the return pipe 9. Circulation thru this system is brought about by the fan 10. The coal col lected n the cyclone separator is discharged into the bin 11 from which it is fed to the 59 burners 1,, of the coml'iustion chamber by the feeder mechanism 13. i

The system described has closed circulation of the air but there is some leakage into such systems to which end a vent is sometimes employed at the which vent, in this case, is here the system iissocia'l nace to be fed, I prefer to vent in the system dircc 1 point marked 14 n smelly closed. with. the tier-- he excess air to ieeder "for reason that there-is some coal carried in suspension in such. To end the return pipe has an enlai ement in from which the excess air is drai-wn oil thru the conduit 16 by the tan 1'?" and led the feeder 13.

in the arrangement of 1, l cure of the condensate by locating condensate collector 18 innncdiately below the point where the return pipe 9 discharges into the mill casing. 'lhe eondcnsatein the return line drips down into this collector by grew-- ity. I lln many instances the condensate carries with it moist-coal particles or, to state the matter in another Way, some of the coal particles oecome moisture laden and gravitate into the collector,

Referring now to the arrangement of 2, it will be seen have arranged the con densate collector 18 in advance oithe fan 17 i. between such an and the return from the vapors drawn oil in the conduit 1%,

clogging" in the feeder and in the line to the feeder is overcome. Fron'i Lime to the collector is cleaned. i I claim:

1. Tie combination in a fuel supply sys tem, with a closed circulation carrying air, amill, separator, iipe from mill to the separator, a return pipe, 11 feeder, a conduit for conveying excess air in the tem to the feeder, ands condensate collector for such conduit.

2. The combination in a fuel supply sys tem with a closed circulation oi carrying air, a mill, a separator, a pipe from mill to the separator, a return pipe, a feeder, e ur nace to be fed, a conduit for removal of on till cess air in the system to the feeder, and a gravity condensate collector in said conduit.

8. The combination in a fuel supply system, with a closed circulation of oerrying air, a mill, a separator, 21 pipe fromnyill to the separator, 21 return pipe, a feeder, a con: duit for conveying excess air in the system to the feeder, a fan in said conduit, and a condensate collector on the intake side of the fun.

In testimony whereof, I have hereunto signed my name.

ARTHUR V. ADAMSON. 

